Tail gas treatment device for nitriding furnace

Abstract

The utility model relates to the technical field of nitriding furnace tail gas treatment, and discloses a nitriding furnace tail gas treatment device which comprises a mounting plate, a treatment assembly mounted at the top of the mounting plate and a water passing assembly mounted at the top of the mounting plate. And the treatment assembly comprises a treatment box fixedly mounted at the top of the mounting plate, a placement box which is slidably connected to the top of the treatment box and penetrates into the treatment box, and a plurality of through holes which are formed in the front surface and the back surface of the placement box and penetrate into the placement box. According to the nitriding furnace tail gas treatment device, tail gas can be subjected to activated carbon adsorption by arranging the treatment assembly, the tail gas can be subjected to high-temperature reaction after adsorption is completed, and water-soluble gas or impurities in the tail gas can be absorbed by arranging the water passing assembly; and through mutual cooperation of the treatment assembly and the water passing assembly, tail gas treatment can be more comprehensive, the tail gas treatment efficiency is further improved, and activated carbon can be rapidly replaced through the treatment assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of nitriding furnace tail gas treatment, in particular to a nitriding furnace tail gas treatment device. Background Art

[0002] In the production of nitriding furnaces, waste gas (including ammonia, nitrogen, water vapor, hydrogen and some other trace gases) generated during the nitriding process and the tail gas discharged during the operation of the nitriding furnace usually need to be burned before being discharged. If this part of the waste gas is discharged directly, it will cause great pollution to the environment.

[0003] Existing nitriding furnace tail gas treatment devices generally decompose the exhaust gas directly by high-temperature combustion of the exhaust gas. However, there are generally some harmful gases in the exhaust gas that cannot be heated and decomposed. Therefore, some nitriding furnace tail gas treatment devices will use activated carbon to adsorb the exhaust gas. However, after being used for a period of time, the adsorption function of the activated carbon will gradually weaken over time, which will affect the exhaust gas treatment efficiency of the exhaust gas treatment device. Therefore, a nitriding furnace tail gas treatment device is proposed to solve the above problem. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a nitriding furnace exhaust gas treatment device, which has the advantages of quick replacement of activated carbon, etc., and solves the problem that the adsorption function of the activated carbon inside the existing nitriding furnace exhaust gas treatment device will gradually weaken over time after being used for a period of time, thereby affecting the exhaust gas treatment efficiency of the exhaust gas treatment device.

[0005] In summary, the utility model provides the following technical solutions: a nitriding furnace tail gas treatment device, comprising a mounting plate, a treatment component mounted on the top of the mounting plate, and a water flow component mounted on the top of the mounting plate.

[0006] The processing assembly includes a processing box fixedly mounted on the top of the mounting plate, a placement box slidably connected to the top of the processing box and penetrating into the interior thereof, a plurality of through holes opened on the front and back of the placement box and penetrating into the interior thereof, a sealing cover plate hingedly connected to the top of the placement box by hinges, a sliding assembly mounted on the front and back of the placement box and guiding it, a heating plate mounted on the top wall and bottom wall of the processing box and located on the right side of the placement box, an air outlet pipe connected to the right side of the processing box, and a movable assembly mounted on the top of the processing box and limiting the placement box;

[0007] The movable component includes a fixed box fixedly installed on the top of the processing box, a threaded sleeve rotatably connected to the right side wall of the inner cavity of the fixed box, a driving component arranged on the top of the fixed box and driving the threaded sleeve to rotate, a threaded rod threadedly connected to the inside of the threaded sleeve, a movable plate installed on the left side of the threaded rod, a limiting component installed on the bottom of the movable plate to prevent it from rotating, a positioning block fixedly installed on the left side of the movable plate, and a positioning groove opened on the right side of the placement box and slidably connected to the positioning block.

[0008] The utility model adopts the above technical scheme, and the harmful substances in the exhaust gas are adsorbed by the activated carbon inside the placement box. Finally, the remaining exhaust gas will contact the heating plate through the placement box, and react with the exhaust gas through the high temperature of the heating plate, so that the harmful gas is completely reacted and finally discharged through the outlet pipe. At the same time, the placement box can be limited by the movable component, which facilitates the replacement of the placement box and ensures the stability of the installation of the placement box.

[0009] Furthermore, the driving assembly includes a rotating rod rotatably connected to the top of the fixed box and penetrating into the interior thereof, a worm gear assembly installed on the outside of the rotating rod, and a knob fixedly installed on the top of the rotating rod.

[0010] The beneficial effect of adopting the above further solution is that by turning the knob, the threaded sleeve can be rotated under the action of the rotating rod and the worm gear assembly.

[0011] Furthermore, the water flow assembly includes a water tank fixedly installed on the top of the mounting plate, an air inlet pipe fixedly installed on the top of the water tank and extending into the interior thereof, a connecting pipe connected to the top of the water tank and one end of which is connected to the left side of the treatment box, and an inlet and outlet assembly installed on the outside of the water tank.

[0012] The beneficial effect of adopting the above further solution is that the gas and impurities in the tail gas that are easily soluble in water can be absorbed by the water-passing component and remain in the water.

[0013] Furthermore, the front and back sides of the placement box are in contact with the front and back side walls of the inner cavity of the processing box respectively, and the bottom of the placement box is in contact with the inner bottom wall of the processing box.

[0014] The beneficial effect of adopting the above further solution is to ensure that when the placement box is slidably connected to the inside of the processing box, the inside of the processing box can be completely shielded by the placement box.

[0015] Furthermore, the sliding assembly includes sliding blocks fixedly installed on the front and back sides of the placement box, and sliding grooves opened on the front and rear side walls of the inner cavity of the processing box and slidably connected to the sliding blocks; the tops of the two sliding grooves both penetrate to the top of the processing box.

[0016] The beneficial effect of adopting the above further solution is that the placement box can be guided by the sliding block and the sliding groove to ensure the stability of the placement box during installation, and at the same time, it can also prevent the placement box from deviating to the left or right.

[0017] Furthermore, the limiting assembly includes a limiting block fixedly mounted on the bottom of the movable plate, and a limiting groove opened on the top of the processing box and slidably connected to the limiting block.

[0018] The beneficial effect of adopting the above further solution is that the movable plate can be limited by the limiting block and the limiting groove to ensure the stability of the movable plate's movement and prevent the movable plate from rotating, and the movable plate can further prevent the threaded rod from rotating.

[0019] Furthermore, the worm gear assembly includes a worm fixedly mounted on the outside of the rotating rod, and a worm wheel fixedly mounted on the outside of the threaded sleeve and meshing with the worm.

[0020] The beneficial effect of adopting the above further solution is that the rotating rod can drive the threaded sleeve to rotate through the worm and the worm wheel.

[0021] Furthermore, the inlet and outlet assembly includes a water inlet pipe connected to the top of the water tank, a water outlet pipe connected to the bottom of the left side of the water tank, and a control valve installed inside the water outlet pipe.

[0022] The beneficial effect of adopting the above further solution is that water can be added to the inside of the water tank through the water inlet pipe, and the inside of the water tank can be discharged through the water outlet pipe and the control valve.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] The nitriding furnace tail gas treatment device can perform activated carbon adsorption on the tail gas by setting a treatment component, and can perform a high-temperature reaction on the tail gas after the adsorption is completed. By setting a water-passing component, the gas or impurities in the tail gas that are easily soluble in water can be absorbed. The coordination of the treatment component and the water-passing component can make the tail gas treatment more comprehensive, and the tail gas treatment efficiency is further improved. The activated carbon can also be quickly replaced through the treatment component, thereby ensuring the adsorption efficiency of the tail gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0027] Figure 3It is a three-dimensional structural schematic diagram of the processing box, the placement box, the through hole, the sealing cover plate and the sliding assembly in the utility model.

[0028] Description of reference numerals:

[0029] 1. Mounting plate; 2. Processing assembly; 201. Processing box; 202. Placement box; 203. Through hole; 204. Sealing cover plate; 205. Sliding assembly; 206. Heating plate; 207. Exhaust pipe; 208. Fixed box; 209. Threaded sleeve; 210. Driving assembly; 2101. Rotating rod; 2102. Worm gear assembly; 2103. Knob; 211. Threaded rod; 212. Movable plate; 213. Limiting assembly; 214. Positioning block; 215. Positioning groove; 3. Water flow assembly; 301. Water tank; 302. Inlet pipe; 303. Connecting pipe; 304. Inlet and outlet assembly. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-3 The nitriding furnace tail gas treatment device in this embodiment includes a mounting plate 1, a treatment component 2 installed on the top of the mounting plate 1, and a water flow component 3 installed on the top of the mounting plate 1.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the processing component 2 includes a processing box 201 fixedly mounted on the top of the mounting plate 1, a placement box 202 slidably connected to the top of the processing box 201 and penetrating into the interior thereof, a plurality of through holes 203 opened on the front and back of the placement box 202 and penetrating into the interior thereof, a sealing cover plate 204 hinged to the top of the placement box 202 by hinges, a sliding component 205 installed on the front and back of the placement box 202 and guiding it, a heating plate 206 installed on the top and bottom walls of the processing box 201 and located on the right side of the placement box 202, an exhaust pipe 207 connected to the right side of the processing box 201, and a movable component installed on the top of the processing box 201 and limiting the placement box 202.

[0033] Among them, the front and back sides of the placement box 202 are in contact with the front and back side walls of the inner cavity of the processing box 201 respectively, and the bottom of the placement box 202 is in contact with the inner bottom wall of the processing box 201, ensuring that when the placement box 202 is slidably connected to the inside of the processing box 201, the inside of the processing box 201 can be completely shielded by the placement box 202.

[0034] It should be noted that activated carbon is placed inside the placement box 202 , and the exhaust gas can pass through the placement box 202 through a plurality of through holes 203 , and the exhaust gas is adsorbed by the activated carbon.

[0035] In addition, the sliding assembly 205 includes sliding blocks fixedly installed on the front and back sides of the placement box 202, and sliding grooves opened on the front and rear side walls of the inner cavity of the processing box 201 and slidably connected to the sliding blocks; the tops of the two sliding grooves both penetrate through the top of the processing box 201, and the placement box 202 can be guided by the sliding blocks and the sliding grooves to ensure the stability of the placement box 202 during installation. At the same time, it can also prevent the placement box 202 from shifting left and right.

[0036] like Figure 1 and Figure 2 As shown, in this embodiment, the movable component includes a fixed box 208 fixedly installed on the top of the processing box 201, a threaded sleeve 209 rotatably connected to the right side wall of the inner cavity of the fixed box 208, a driving component 210 arranged on the top of the fixed box 208 and driving the threaded sleeve 209 to rotate, a threaded rod 211 threadedly connected to the inside of the threaded sleeve 209, a movable plate 212 installed on the left side of the threaded rod 211, a limiting component 213 installed on the bottom of the movable plate 212 to prevent it from rotating, a positioning block 214 fixedly installed on the left side of the movable plate 212, and a positioning groove 215 opened on the right side of the placement box 202 and slidably connected to the positioning block 214.

[0037] It should be noted that the driving assembly 210 includes a rotating rod 2101 rotatably connected to the top of the fixed box 208 and extending into the interior thereof, a worm gear assembly 2102 installed on the outside of the rotating rod 2101, and a knob 2103 fixedly installed on the rotating rod 2101 and extending through one end of the top of the outside of the fixed box 208.

[0038] The bottom of the rotating rod 2101 is rotatably connected to the inner bottom wall of the fixed box 208 to ensure the stability of the rotation of the rotating rod 2101. When the knob 2103 is rotated, the knob 2103 will drive the rotating rod 2101 to rotate.

[0039] In addition, the worm gear assembly 2102 includes a worm fixedly mounted on the outside of the rotating rod 2101 and a worm wheel fixedly mounted on the outside of the threaded sleeve 209 and meshing with the worm. When the rotating rod 2101 rotates, the rotating rod 2101 drives the worm to rotate, the worm drives the worm wheel meshing therewith to rotate, and the worm wheel drives the threaded sleeve 209 to rotate. The rotating rod 2101 can drive the threaded sleeve 209 to rotate through the worm and the worm wheel.

[0040] It should be noted that the limit assembly 213 includes a limit block fixedly installed at the bottom of the movable plate 212, and a limit groove opened at the top of the processing box 201 and slidably connected to the limit block. The movable plate 212 can be limited by the limit block and the limit groove to ensure the stability of the movement of the movable plate 212 and prevent the movable plate 212 from rotating. The movable plate 212 can further prevent the threaded rod 211 from rotating. When the threaded sleeve 209 rotates, under the action of the threaded thrust, the threaded sleeve 209 will drive the movable plate 212 to move to the right or left, and the movable plate 212 will drive the positioning block 214 to move to the right or left.

[0041] Specifically, when the positioning block 214 moves to the right and is disengaged from the positioning groove 215, the placement box 202 can be taken out from the inside of the treatment box 201, and the activated carbon inside the placement box 202 can be replaced through the sealing cover 204. When the positioning block 214 moves to the left and is slidably connected to the inside of the positioning groove 215, the placement box 202 can be fixed to ensure the stability of the installation of the placement box 202, thereby ensuring the adsorption effect of the exhaust gas treatment device.

[0042] like Figure 1 As shown, in this embodiment, the water flow component 3 includes a water tank 301 fixedly installed on the top of the mounting plate 1, an air inlet pipe 302 fixedly installed on the top of the water tank 301 and penetrating into the interior thereof, a connecting pipe 303 connected to the top of the water tank 301 and one end of which is connected to the left side of the treatment box 201, and an inlet and outlet component 304 installed on the outside of the water tank 301.

[0043] Among them, water is placed inside the water tank 301, and the bottom of the air intake pipe 302 is located inside the water. The exhaust gas can enter the water tank 301 through the air intake pipe 302, and at the same time, the waste gas enters the water, so that the water-soluble impurities in the waste gas remain in the water, and the remaining exhaust gas will enter the treatment box 201 through the connecting pipe 303.

[0044] In addition, the inlet and outlet assembly 304 includes a water inlet pipe connected to the top of the water tank 301, a water outlet pipe connected to the bottom left side of the water tank 301, and a control valve installed inside the water outlet pipe. Water can be added to the water tank 301 through the water inlet pipe, and water can be discharged from the water tank 301 through the water outlet pipe and the control valve.

[0045] Specifically, the water-soluble gases and impurities in the exhaust gas can be absorbed by the water-pass component 3 and remain in the water, and then the harmful substances in the exhaust gas are adsorbed by the activated carbon inside the placement box 202. Finally, the remaining exhaust gas will contact the heating plate 206 through the placement box 202, and the high temperature of the heating plate 206 will react with the exhaust gas to make the harmful gas react completely. Finally, the exhaust pipe 207 is discharged, and an exhaust fan is provided inside the exhaust pipe 207. The exhaust fan can make the exhaust gas circulation more stable and avoid the exhaust gas backflow.

[0046] The working principle of the above embodiment is:

[0047] 1. When the nitriding furnace tail gas treatment device is in use, the tail gas enters the interior of the water tank 301 through the air inlet pipe 302, and enters the water inside the water tank 301, so that the gas and impurities in the tail gas that are easily soluble in water remain in the water, and the remaining tail gas enters the interior of the treatment box 201 through the connecting pipe 303, and when passing through the placement box 202 inside the treatment box 201, it is adsorbed by the activated carbon inside the placement box 202, and the harmful impurities in the tail gas are adsorbed by the activated carbon. After the adsorption is completed, the remaining tail gas will contact the heating plate 206 through the placement box 202, and the high temperature of the heating plate 206 will react with the tail gas, so that the harmful gas will react completely, and finally be discharged through the outlet pipe 207;

[0048] 2. After the nitriding furnace tail gas treatment device has been used for a period of time, the knob 2103 is turned, the knob 2103 will drive the rotating rod 2101 to rotate, the rotating rod 2101 will drive the worm to rotate, the worm will drive the worm gear meshing therewith to rotate, the worm gear will drive the threaded sleeve 209 to rotate, under the action of the thread thrust, the threaded sleeve 209 will drive the movable plate 212 to move to the right, the movable plate 212 will drive the positioning block 214 to move to the right, when the positioning block 214 is disengaged from the positioning groove 215, the positioning block 214 can be moved to the right. The placement box 202 is taken out from the inside of the treatment box 201, and the activated carbon inside the placement box 202 can be replaced through the sealing cover 204. After the replacement is completed, the placement box 202 is installed through the sliding block and the sliding groove, and then the knob 2103 is rotated in the opposite direction. According to the above principle, the positioning block 214 can be moved to the left. When the positioning block 214 is slidably connected to the inside of the positioning groove 215, the placement box 202 can be fixed to ensure the stability of the installation of the placement box 202, thereby ensuring the adsorption effect of the exhaust gas treatment device.

Claims

1. Nitriding furnace tail gas treatment device, characterized in that: It comprises a mounting plate (1), a processing component (2) mounted on the top of the mounting plate (1), and a water flow component (3) mounted on the top of the mounting plate (1); The processing assembly (2) comprises a processing box (201) fixedly mounted on the top of the mounting plate (1), a placement box (202) slidably connected to the top of the processing box (201) and penetrating into the interior thereof, a plurality of through holes (203) opened on the front and back of the placement box (202) and penetrating into the interior thereof, a sealing cover plate (204) hingedly connected to the top of the placement box (202) by hinges, a sliding assembly (205) mounted on the front and back of the placement box (202) and guiding the placement box (202), a heating plate (206) mounted on the inner top wall and the inner bottom wall of the processing box (201) and located on the right side of the placement box (202), an air outlet pipe (207) connected to the right side of the processing box (201), and a movable assembly mounted on the top of the processing box (201) and limiting the placement box (202); The movable component comprises a fixed box (208) fixedly mounted on the top of the processing box (201), a threaded sleeve (209) rotatably connected to the right side wall of the inner cavity of the fixed box (208), a driving component (210) arranged on the top of the fixed box (208) and driving the threaded sleeve (209) to rotate, a threaded rod (211) threadedly connected to the inside of the threaded sleeve (209), a movable plate (212) mounted on the left side of the threaded rod (211), a limiting component (213) mounted on the bottom of the movable plate (212) and preventing the movable plate (212) from rotating, a positioning block (214) fixedly mounted on the left side of the movable plate (212), and a positioning groove (215) opened on the right side of the placement box (202) and slidably connected to the positioning block (214).

2. The nitriding furnace tail gas treatment device according to claim 1, characterized in that: The driving assembly (210) comprises a rotating rod (2101) rotatably connected to the top of the fixed box (208) and extending into the interior thereof, a worm gear assembly (2102) mounted on the outside of the rotating rod (2101), and a knob (2103) fixedly mounted on the top of the rotating rod (2101).

3. The nitriding furnace tail gas treatment device according to claim 1, characterized in that: The water flow assembly (3) comprises a water tank (301) fixedly mounted on the top of the mounting plate (1), an air inlet pipe (302) fixedly mounted on the top of the water tank (301) and extending through the interior thereof, a connecting pipe (303) connected to the top of the water tank (301) and having one end connected to the left side of the treatment box (201), and an inlet and outlet assembly (304) mounted on the outside of the water tank (301).

4. The nitriding furnace tail gas treatment device according to claim 1, characterized in that: The front and back sides of the placement box (202) are in contact with the front and back side walls of the inner cavity of the processing box (201) respectively, and the bottom of the placement box (202) is in contact with the inner bottom wall of the processing box (201).

5. The nitriding furnace tail gas treatment device according to claim 1, characterized in that: The sliding assembly (205) comprises sliding blocks fixedly mounted on the front and back sides of the placement box (202), and sliding grooves opened on the front and rear side walls of the inner cavity of the processing box (201) and slidably connected to the sliding blocks; the tops of the two sliding grooves both penetrate to the top of the processing box (201).

6. The nitriding furnace tail gas treatment device according to claim 1, characterized in that: The limiting assembly (213) comprises a limiting block fixedly mounted on the bottom of the movable plate (212), and a limiting groove opened on the top of the processing box (201) and slidably connected to the limiting block.

7. The nitriding furnace tail gas treatment device according to claim 2, characterized in that: The worm gear assembly (2102) comprises a worm fixedly mounted on the outside of the rotating rod (2101), and a worm wheel fixedly mounted on the outside of the threaded sleeve (209) and meshing with the worm.

8. The nitriding furnace tail gas treatment device according to claim 3, characterized in that: The inlet and outlet assembly (304) comprises a water inlet pipe connected to the top of the water tank (301), a water outlet pipe connected to the bottom of the left side of the water tank (301), and a control valve installed inside the water outlet pipe.

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